Now showing items 1-20 of 447

    • Student perspectives in quantum physics 

      Baily, Charles; Finkelstein, Noah D. (American Institute of Physics, 2008) - Conference item
      Introductory courses in classical physics are promoting in students a realist perspective, made up in part by the belief that all physical properties of a system can be simultaneously specified, and thus determined at all ...
    • Dusty disks at the bottom of the initial mass function 

      Scholz, Alexander; Jayawardhana, Ray (2008-01-01) - Journal article
      Isolated planetary-mass objects (IPMOs) have masses close to or below the deuterium-burning mass limit (similar to 15 M-Jup)-at the bottom of the stellar initial mass function. We present an exploratory survey for disks ...
    • A novel design of dielectric perfect invisibility devices 

      Ochiai, T.; Leonhardt, U.; Nacher, J. C. (2008-03) - Journal article
      The aim of an invisibility device is to guide light around any object put inside, being able to hide objects from sight. In this work, we propose a novel design of dielectric invisibility media based on negative refraction ...
    • Quantum interpretations in modern physics instruction 

      Baily, Charles; Finkelstein, Noah D. (American Institute of Physics, 2009) - Conference item
      Just as expert physicists vary in their personal stances on interpretation in quantum mechanics, instructors hold different views on teaching interpretations of quantum phenomena in introductory modern physics courses. ...
    • Development of quantum perspectives in modern physics 

      Baily, Charles; Finkelstein, Noah D. (2009-03-23) - Journal article
      Introductory undergraduate courses in classical physics stress a perspective that can be characterized as realist; from this perspective, all physical properties of a classical system can be simultaneously specified and ...
    • Understanding the rich physics of light propagation in slow photonic crystal waveguides 

      Krauss, Thomas F.; O'Faolain, Liam; Schulz, Sebastian; Beggs, Daryl Matthew; Morichetti, Francesco; Canciamilla, Antonio; Torregiani, M.; Melloni, Andrea; Mazoyer, Simon; Lalanne, Phillippe; Samarelli, Antonio; Sorel, Marc; De La Rue, Richard (SPIE, 2010-02) - Conference item
      We study propagation losses in slow light photonic crystal waveguides and show that dispersion engineering can reduce the loss. We develop an improved understanding of why and how this occurs and develop an new approach ...
    • Local measurement of the penetration depth in the pnictide superconductor Ba(Fe0.95Co0.05)2As2 

      Luan, Lan; Auslaender, Ophir; Lippman, Thomas M; Hicks, Clifford William; Kalisky, Beena; Chu, Jiun-Haw; Analytis, James G; Fisher, Ian R; Kirtley, John R; Moler, Kathryn A (2010-03) - Journal article
      We use magnetic force microscopy (MFM) to measure the local penetration depth λ in Ba(Fe0.95Co0.05)2As2 single crystals and use scanning superconducting quantum interference device susceptometry to measure its temperature ...
    • Refined characterization of student perspectives on quantum physics 

      Baily, Charles; Finkelstein, Noah D. (2010-09-16) - Journal article
      The perspectives of introductory classical physics students can often negatively influence how those students later interpret quantum phenomena when taking an introductory course in modern physics. A detailed exploration ...
    • Ionization in atmospheres of brown dwarfs and extrasolar planets. I. The role of electron avalanche 

      Helling, Christiane; Jardine, M.; Witte, S.; Diver, D. A. (2011-01-20) - Journal article
      Brown dwarf and extrasolar planet atmospheres form clouds which strongly influence the local chemistry and physics. These clouds are globally neutral obeying dust-gas charge equilibrium which is, on short timescales, ...
    • Local measurement of the superfluid density in the pnictide superconductor Ba(Fe1-xCox2)As2 across the superconducting dome 

      Luan, Lan; Lippman, Thomas M; Hicks, Clifford William; Bert, Julie A; Auslaender, Ophir M; Chu, Jiun-Haw; Analytis, James G; Fisher, Ian R; Moler, Kathryn A (2011-02-09) - Journal article
      We measure the penetration depth λab(T) in Ba(Fe1-xCox)2As2 using local techniques that do not average over the sample. The superfluid density ρs(T)≡1/λab(T)2 has three main features. First, ρs(T=0) falls sharply on the ...
    • Microspectroscopy of ultrafast laser inscribed channel waveguides in Yb:tungstate crystals 

      Bain, F. M.; Silva, W. F.; Lagatsky, A. A.; Thomson, R. R.; Psaila, N. D.; Kar, A. K.; Sibbett, W.; Jaque, D.; Brown, C. T. A. (2011-04) - Journal article
      We report microspectroscopy measurements of crystalline channel waveguides fabricated in Yb:KGd(WO4)(2) and Yb:KY(WO4)(2) using the ultrafast laser inscription technique. From these measurements we find that densification ...
    • Electrical conduction and optical properties of doped SOI Photonic Crystals 

      Cardile, Paolo; Franzo, Giorgia; Lo Savio, Roberto; Galli, Matteo; Krauss, Thomas Fraser; Priolo, Francesco; O'Faolain, Liam (2011-05) - Journal article
      We investigate the electrical properties of silicon-on-insulator (SOI) photonic crystals as a function of both doping level and air filling factor. The resistance trends can be clearly explained by the presence of a depletion ...
    • Reply to comment on 'No quantum friction between uniformly moving plates' 

      Philbin, T. G.; Leonhardt, U. (2011-06-03) - Journal item
      we reply to the comment on our paper made by Volokitin and Persson (2011 New J. Phys. 13 068001).
    • Numerical investigation of passive optical sorting of plasmon nanoparticles 

      Ploschner, Martin; Mazilu, Michael; Cizmar, Tomas; Dholakia, Kishan (2011-07-06) - Journal article
      We explore the passive optical sorting of plasmon nanoparticles and investigate the optimal wavelength and optimal beam shape of incident field. The condition for optimal wavelength is found by maximising the nanoparticle ...
    • Exploring the magnetic topologies of cool stars 

      Morin, J.; Donati, J.-F.; Petit, P.; Albert, L.; Auriére, M.; Cabanac, R.; Catala, C.; Delfosse, X.; Dintrans, B.; Fares, R.; Forveille, T.; Gastine, T.; Jardine, M.; Konstantinova-Antova, R.; Lanoux, J.; Lignires, F.; Morgenthaler, A.; Paletou, F.; Velez, J. C. Ramirez; Solanki, S. K.; Thado, S.; Van Grootel, V. (Cambridge University Press, 2011-08) - Conference item
      Magnetic fields of cool stars can be directly investigated through the study of the Zeeman effect on photospheric spectral lines using several approaches. With spectroscopic measurement in unpolarised light, the total ...
    • Superfluid density of an open dissipative condensate 

      Keeling, Jonathan (2011-08-16) - Journal article
      I calculate the superfluid density of a nonequilibrium steady state condensate of particles with finite lifetime. Despite the absence of a simple Landau critical velocity, a superfluid response survives, but dissipation ...
    • Hall coefficient anomaly in the low-temperature high-field phase of Sr3Ru2O7 

      Borzi, Rodolfo Alberto; McCollam, A.; Bruin, Jan Adrianus Nathan; Perry, Robin Stuart; Mackenzie, Andrew; Grigera, Santiago Andres (2011-11-10) - Journal article
      We report a study of the Hall effect of high-purity Sr3Ru2O7 single crystals. We establish an empirical correlation between the onset of its unusual low-temperature, high-field phase and a pronounced dip in the field-dependent ...
    • Exploring the ultrashort pulse laser parameter space for membrane permeabilisation in mammalian cells. 

      Rudhall, Andrew Peter; Antkowiak, Maciej; Tsampoula, Xanthi; Mazilu, Michael; Metzger, N Klaus; Gunn-Moore, Frank J; Dholakia, Kishan (2012) - Journal article
      The use of ultrashort femtosecond pulsed lasers to effect membrane permeabilisation and initiate both optoinjection and transfection of cells has recently seen immense interest. We investigate femtosecond laser-induced ...
    • Collisionless distribution function for the relativistic force-free Harris sheet 

      Stark, C. R.; Neukirch, T. (2012-01) - Journal article
      A self-consistent collisionless distribution function for the relativistic analogue of the force-free Harris sheet is presented. This distribution function is the relativistic generalization of the distribution function ...
    • Interpretive themes in quantum physics : curriculum development and outcomes 

      Baily, Charles; Finkelstein, Noah D. (American Institute of Physics, 2012-02-06) - Conference item
      A common learning goal for modern physics instructors is for students to recognize a difference between the experimental uncertainty of classical physics and the fundamental uncertainty of quantum mechanics. Our prior work ...